Eating healthy can be a challenge, whether you are trying to get healthier, add more fruits and vegetables to your meals, or if you are simply trying to eat a more balanced diet - especially on the road. You may find one of the greatest roadblocks to improved nutrition is giving into snack cravings - and if so, you are not alone. A 2014 report by Nielsen found that global sales of snack foods have reached nearly $400 billion.